Machine for peeling willow and like material



Dem 21,1926

J. TERBERGER MAcHNE FOR EELING WILLOW AND LIKE MATERIAL Filed may s, 1926 Patented Dec. 21, 1926.

UNITED stares rrsnr orFlcE.

JULIUS TER/BERGER, OF HILFABTH, GERMANY.

MACHINE FOR FEELING VILLOW' Alti?) LIKE`MATECRIAI...V

Application filed May 3, 1926, Serial No'. 106,483, and in Germany May 6,1925.

This invention relates to amachine for peeling willow and like material in which the rod to be peeled is pulled through a spring-influenced stripper by means of a clamp arranged on a revolving wheel and adapted to be automatically closed and opened for gripping or releasing the rod.

There has already been proposed a machine of this type in which the clamp which seizes the rod at a point ahead of the strip per, is designed to introduce it into and pull it through the stripper which consists of a spring bow with overlapping blades atits ends. However, the purpose striven for can not be attained with this known machine. For introducing the rod into the stripper of this machine the rod ought to overcome the spring force of the spring bow of the stripper, but it will not do this because of its own flexibility; therefore the rod will not open the stripper but simply glide along the same without being peeled. Besides, if one would tend to aid in the introduction of the rod into the stripper by hand, the introduotion could only be effec-ted in the known machine after the thick end of the rod would have moved aiready for a considerable distance beyond the stripper, because only at such a point.V the rod would assume the angular position required for engaging the stripper, since the latter is arranged outside the path of the clamp. Therefore the most valuable thick end of the rod would not be peeled. Another drawback of the known machine resides in that the stripper is never positively opened so that it will soon be clogged up with the bark or skin stripped from the willow rods which will interfere with the proper working until it hasbeen removed from the stripper by hand. This drawback is even aggravated by the oblique position of the stripper in the known Inachine.

All of these disadvantages are avoided by the machine according to the invention, in which the thick end of the wiliow rod is inserted into the stripper and seized by the clamp after the latter has passed the stripper so that the rod` is pulled' through the stripper throughout its entire length. This is attained by arranging the stripper in the path ofmovement of the clamp, causing the clamp which is carried by a wheel to pass over the stripper in open condition and to close immediately in rear of the stripper for'seizing the thick end of the rod to be Vclosing the stripper at each revolution of the clamp-carrying wheel to such an extent that all bark remaining between the stripper jaws may drop out. This is still facilitated by arranging the stripper with its mouth directed vertically downwards.`

Another object of the invention is to make the stripper jaws of round iron bars so as to prevent them from injuring the wood.

ri further object of the invention consists in making the stripper of a construction so that its pressure on the rods to be peeled may be reguiated in a simple andy quick manner in accordance with the softness of the material to be treated.

Still other objects of the invention reside in the construction and arrangement of the means for automatically opening and closing the clamp and the stripper during the operation of the machine.

An embodiment of thev subject-matter of the invention is illustrated, by way of exampe, in the accompanying drawing in` which:

Fig. l is a side elevation of the machine with the 'clamp in a position in which it has moved beyond the stripper;

Fig.- 2 is a front elevation thereof with the clamp immediately in front of the stripper;

Fig. 3 is a detail front view of the stripper on an enlarged scale, and

Fig. 4L is a bottom plan view of Fig. 3. The machine comprises a stationary stripper a and a revolving clamp t'. The stripper Y a is mounted on a pin g of a transverse bar of the frame g ofthe machine, while the clamp 1I is carried by the circumference of a revolving wheel s which is fastened on the driving shaft o mounted in the frame g. The stripper a is arranged in the path of movement of the clamp z'. Both the stripper and the clamp are constructed as tongs. The mouth opening of the stripper lies vertically downwards. The opening and closing of the stripper a is effected by means of cam disks f which are fastened on the shaft 7' so that they take part in the rotation of this shaft. The clamp i is opened and closed by means of cam disks Z through which the shaft r passes freely and which are rigidly connected with the frame Q by brackets Q. Connected with the free ends of the shanks of the tongs which form the stripper a and which are pi voted on the pin g, are helicai springs it which tend to ciose the stripper. The other ends ot the springs 7i. are connected with set screws L held by means ot wing nuts in brackets q ot the iframe q. The tension of the springs k andthe consequent pressure of the stripper on on the rods or.

stems inserted into it may be regulated by adjusting` the screws 7i. 'lhe shanlis of the stripper a. have besides pivotally connected with them transmission rods c, the other ends ot which are pivoted to levers l which are rotatably supported at e on the iframe (j. These levers are placed under the action oil the cams @nce at each revohition ot the shaft r, the levers ai are depressed by the cams so as to open the stripper a through the intern'iediary oi? the rods c against the action of the springs 7i. Upon the action ot the cams f on the levers Z hav-- ing' ceased, the stripper is in'n'nediately closed again and the levers l are returned into their initilfil positions by the si "ings fz.

The Shanks z" oi? the tongs forming the clamp 'i are pivotaily connected with shitting rods 7u, movable in guides s of j the wheel s and provided at thei tree ends with heads 7u. 'ifhese heaes are held in contact with the circumference ot the cam disks Z by means of helical springs a the one ends of which arc connected with the rods k, while their other ends are adjustahly connected with toothed bars 0 arranged on the body ot' the wheel a, its will be understood, the springs a tend to close the clamp By connecting the springs a to one or the other tooth of the bars o the tension ot the springs a. and consequently the clamping' aressure of the clamp may be regulated. The cam acesoithe disks Z are adapted to shift the rods 7c against the action ot the springs a in such a manner that the clamp i is opened. rEhe :ain faces are of a configuration so that the rods 7c are instantaneously returned to their initial positions and the clamp t' is closed through the action of the springs a as soon as the rods have passed beyond the portion et the cams which. has the greatest diameter and at which the clamp is in wide open condition. To this end, the highest point ot each cam tace is connected with its lowest point by radial tace as may be clearly seen from Figa. l. The machine is preferably driven by means ot an electromotor.

is more particularly shown in Figs. 3 and 4t, the aws ot' the stripper ci consist of horizontal arms a attached to the Shanks and having at their 'lee ends vertically depending bars a oi round section which are preterably covered with rubber. The arms a', CL

4and the hars 0,, e are usually in contact with each other under the action oit the springs 7i. lhe horizontal arms a are proif'icled on their top surfaces with plates a" These plates are designed te here phiced bcA tween thorn the thick end oi' the willow rods to be peeled. )per is opened iVhen the i the willow rod will drop between the bars a, and be seized by the same when the stripper is closed again. The stripper is always opened only tor a very short moment so that there is no time ifor the willoirY rod 'for i'alling entirely through the stripper when same is being opened.

iis indicated in dotted lines in Fig. lI there may be arranged at the front side oi the machine a table p on which the rods to be peeiet are plied and `trom which they are manually ted to the stripi er of the machine.

"ir-ie operation of the machine is as iollows: The machine is started and a willow talifrom the table p and piaced with its thicl': end brtween the guide plates am so that it rests on the horizontal arms u. iurinfcj the rotation ofthe shaft rithe jar-.1s ca, o or the. stripper a are moved apart so that the rod rest-infr@` on the arms e drops between the bars "-id is seized by the same insinufjeh as le stripper is closed again by the spriir immedateiy upon haring` been opened. iif'hen the clamp i carried by the wheel s renc ies the point it it has heen wide- I,pencil bj, the cams Z and in this open condition izrev the pper e as is to be seen from Fi, l ihen the ciainp t' reaches` the point B it has already closed and seized the thick end ot the rod held in and project in@` trom'the jaw a or the stripper c in the direction oi" moremei-,it oi the ciainp v'. Duringr the further movement oitl the clamp i, same pulis the 'esilio rod through the stripper d so that d e bark or skin is stripped from the rod. nfhen the ciamp c' comes into its lowcrmost position, it begins to open again so that the peeled rod is released and dropsto the bottom. TWhen the stripper l is opened th barlt contained therein falls out of it beiiore the next rod drops between .and is seized by the jaws of the stripper.

Haring thus described my invention, whatv claim as new and desire to secure by Letters Patent, is

l. fr machine of the character described, comprising a rotary wheel provided with a clamp on its circumference, a stripper mount ed on the frame of the machine in the path of movement of the said clamp, means for opening1 and closing the stripper so as to allow it to receive and hold one end of the rod to be peeled, means for opening the clamp during its movement past the strip ier and for closing it immediately upon having passed beyond the stripper so that it wili seize the rod end held in the stripper and pull the rod through the stripper during` the iurther movement of the clamp-carrying wheel.

2. A machine of the character described, comprising a rotary wheel provided with a leu Clamp on its circumference, a stripper mounted on the frame of the machine in the path )f movement of the said clamp and consisting of tongs having jaws including horizontal arms with guide plates on their top surfaces and gripping bars of circular cross-section vertically depending from the free ends of the horizontal arms, means for opening and closing the stripper so as to allow it to receive and hold one end of the rod to he peeled, means for opening the clamp during its movement past the stripper and for closing it immediately upon having passed beyond the stripper so that it will seize the rod end held in the stripper and pull the rod through the stripper.

3. peeling machine, comprising a rot-ary wheel carrying a pulling clamp on its circumference, a stripper in the form of tongs mounted on the frame of the machine in the path of movement of the said clamp, springs operatively connected with the Shanks of the stripper tongs for keeping the stripper closed, setting screws connected with the springs and adapted to regulate their tension, means for opening the stripper against the action of the springs, and means for opening the clamp during its movement past the stripper and for closing it immediately upon having passed beyond the stripper so that it will seize the rod end held in the stripper and pull the rod through the stripper.

4. A peeling machine, comprising a driving shaft mounted in the frame of the machine, a wheel fastened on the driving shaft and carrying ,a pulling clamp on its circumference, a stripper in the form of tongs mounted on the frame in the path of move-- ment of the said clamp, springs operatively connected with the shanks of the stripper tongs for keeping the stripper closed, means for regulating the tension of these springs, levers mounted on the frame, connecting rods between the levers and the Shanks of the stripper tongs, cams fixed on the driving shaft and adapted to rock the said levers so as to open the stripper against the action of the springs connected therewith, means for opening the clamp during its movement past the stripper and for closing it immediately upon having moved past the stripper.

5. A peeling machine, comprising a driving shaft mounted for rotation in the frame of the machine, a wheel fastened on the driving shaft and carrying on its circumference a pulling clamp in the forni of tongs, a stripper mounted on the frame in the path of movement of the clamp, means for opening and closing the stripper so as to allow it to receive and hold the rod to be peeled,-

shifting rods connected with the Shanks of the clamp tongs and arranged to slide radially in guides fixed on the wheel, cams loosely mounted on the driving shaft and rigidly connected with the frame, said cams being arrangedfor cooperation with the free ends of the shifting rods and adapted to open the clamp through the intermediary of the said shifting rods when the clamp moves past the stripper, springs connected with the shifting rods and the wheel and adapted to close the clamp and hold it closed immediately upon the clamp having moved past the stripper, so that the clamp will grip the rod tobe peeled held in the stripper and pull it throughthe latter.

in testimony whereof .I have signed my name to this speciication.

JULiUs TERBERGER. 

